I'm using C# and i need to create a XML document. Ok, i did, but, in each element i need to put a tc prefix.
The only way that i know, is using xmlDoc.CreateElement("tc", "node1", "file.xsd"), but it is very massive because i have lots of tags and my program its already writted.
Is this the only way?
This might work for you:
XmlReader - I need to edit an element and produce a new one
If you're lucky enough to be using C# 3.5, take a look at LINQ to XML.
Here's a document on How to: Create a Document with Namespaces (C#) (LINQ to XML) from MSDN for the LINQ to XML API.
And if you've never seen LINQ to XML before, take a look at this 5 minute overview
Related
Hi i have a xml file with entities,
below is a piece of my xml code
<line>Intellectual life – 1268–1559. I. Title.</line>
<line>DG533.R84 2015</line>
<line>945′.05–dc23 2014019659</line>
when i load the above xml in c#, entities are missing and substituted with some other values,
may i know what is the reason
below is modified xml using c#
<line>Intellectual life – 1268–1559. I. Title.</line>
<line>DG533.R84 2015</line>
<line>945′.05–dc23 2014019659</line>
i want the modified xml as same as source xml
here is my c# code to do above process
using System.Xml;
XmlDocument doc= new XmlDocument();
doc.Load("sample.xml");
doc.Save("sample.xml");
Thanks
Appu
How do I preserve special characters when writing XML with XDocument.Save()?
According to #JonSkeet's answer in the above link, they (the encoded entity and it's corresponding character getting saved) are just different representation of the same thing. This translation shouldn't cause you any trouble because normally the receiving party that process the XML further will recognize either representation as the same thing.
XDocument.Save() removes my
entities
If you really need to preserve the entities, there is also an attempt to do so by inheriting XmlTextWriter class and overriding it's WriteString() method to be manually replacing each special character with the corresponding entity. See the 2nd link above for example implementation. Anyway this approach is going to be cumbersome if you have many different entities to preserve.
I'm using C# with .net 3.5 and have a few cases where I want to replace some substrings in the XML attributes of an XmlDocument with something else.
One case is to replace the single quote character with ' and the other is to clean up some files that contain valid XML but the attributes' values are no longer appropriate (say replace anything attribute which starts with "myMachine" with "newMachine").
Is there a simple way to do this, or do I need to go through each attribute of every node (recursively)?
One way to approach it is to select a list of the correct elements using Linq to XML, and then iterate over that list. Here's an example one-liner:
XDocument doc = XDocument.Load(path);
doc.XPathSelectElements("//element[#attribute-name = 'myMachine']").ToList().ForEach(x => x.SetAttributeValue("attribute-name", "newMachine"));
You could also do a more traditional iteration.
I suggest taking a look at LINQ to XML. There's a collection of code snippets that can help you get started here - LINQ To XML Tutorials with Examples
LINQ to XML should allow you to do what you're looking to do, and you'll probably find it easy once you've played with it a bit.
I have a big xml file which is composed of multiple xml files. The file structure is like this.
<xml1>
</xml1>
<xml2>
</xml2>
<xml3>
</xml3>
.
.
<xmln>
</xmln>
I want to process each XML file by a LINQ statement but I am not sure how to extract each XML element individually from the file and continue the iteration until the end. I figured experts here would be able to give me the nudge I am looking for. My requirement is to extract the individual elements so i could load into a XDoc element for further processing and continue on through the subsequent elements. Any help on this would be greatly appreciated.
Thanks for reading!!
Assuming each element is a valid XML, you can wrap your document in a top-level tag and then load it just fine:
<wrap>
<xml1>
</xml1>
<xml2>
</xml2>
</wrap>
You can use the System.Xml reference, which includes a lot of built-in functionality, and it allows you to declare an XmlTextReader. More info here.
If this is an error log with individual well formed xml elements, you probably don't want to load it as an XMLDocument. A better option is to use an XPathDocument created with an XmlReader where the XmlReaderSettings specify ConformanceLevel.Fragment. Then you can use an XPathNavigator to access your elements and attributes as needed. See the third answer in this forum post for sample code.
...late by just a year and then some. :)
i have just started learning linq because i like the sound of it. and so far i think im doing okay at it.
i was wondering if Linq could be used to find the following information in a file, like a group at a time or something:
Control
Text
Location
Color
Font
Control Size
example:
Label
"this is text that will
appear on a label control at runtime"
23, 77
-93006781
Tahoma, 9.0, Bold
240, 75
The above info will be in a plain file and wil have more than one type of control and many different sizes, font properties etc associated with each control listed. is it possible in Linq to parse the info in this txt file and then convert it to an actual control?
i've done this using a regex but regex is too much of a hassle to update/maintain.
thanks heaps
jase
Edit:
Since XML is for structured data, would Linq To XML be appropriate for this task? And would you please share with me any helpful/useful links that you may have? (Other than MSDN, because I am looking at that now. :))
Thank you all
If you are generating this data yourself, then I HIGHLY recommend you store this in an XML file. Then you can use XElement to parse this.
EDIT: This is exactly the type of thing that XML is designed for, structured data.
EDIT EDIT: In response to the second question, Linq to XML is exactly what your looking for:
For an example, here is a couple of links to code I have written that parses XML using XElements. It also creates a XML document.
Example 1 - Loading and Saving: have a look under the FromXML() and ToXML() methods.
Example 2 - Parsing a large XML doc: have a look under the ParseXml method.
Hope these get you going :D
LINQ is good for filtering off rows, selecting relevant columns etc.
Even if you use LINQ for this, you will still need regex to select the relevant text and do the parsing.
Is there a simple way to compare two XML structures to determine if they have the same structure and data?
I have a function that returns an XmlNode and I am trying to write unit tests for it. I store the correct XML result in a file. Durring the test I load the file into an XmlDocument, locate the proper XmlNode and compare against the result of the function. A straight compare does not work (as expected) and InnerXml does not work either.
I am considering removing all whitespace from InnerXml and comparing that, or writing my own compare to walk the tree, but I don't like either option much.
XNode.DeepEquals. Read the caveats before using it.
If you must use XmlDocument and its supporting types, consider using Microsoft's XmlDiffPatch, which performs customizable diff-operations on XML data structures.
Like CodeToGlory answered, XNode.DeepEquals() might fit your bill, check the remarks section on the MSDN page.
If you are stuck with XmlDocument (instead of XDocument), the answer is: No, there is no simple (existing way) to do it. XmlNode does not override Equals(), or provide an alternative. But it is not impossible to write, and that same Remarks section can be used as a starting point for a tree-walk algorithm.
Do get a clear picture of your requirements first, concerning Attributes, comments, CDATA nodes etc.